IV 



The Development of a Leucocytozoon of Guinea-Pigs. By Edward Halford Eoss, 

 M.R.C.S. England, L.R.C.P. London. Communicated by Sir Ronald Ross, 

 K.C.B., F.R.S. (Plate 1) 67 



The Bacterial Production of Acetylmethylcarbinol and 2.3-Butylene Glycol from 

 Various Substances. — II. By Arthur Harden, F.R.S., and Dorothy Norris, 

 Biochemical Department, Lister Institute 73 



On the Distribution of the Nerves of the Dental Pulp. By J. Howard Mummery. 



Communicated by Prof. J. Symington, F.R.S. (Abstract) 79 



No. B 577.— May 9, 1912. 

 A Confusions-Test for Colour-Blindness. By George J. Bnrch, M.A., D.Sc. Oxon, 



F.R.S 81 



The Locomotor Function of the Lantern in Echinus, with Observations on other 

 Allied Lantern Activities. By J. F. Gemmill, M.A., M.D., D.Sc, F.Z.S., 

 Lecturer in Embryology, Glasgow University, and in Zoology, Training College, 

 Glasgow. Communicated by Dr. E. W. MacBride, F.R.S 84 



Studies on Enzyme Action. XV. — Urease : a Selective Enzyme. By Henry £. 



Armstrong, F.R.S., and Edward Horton 109 



Certain Results of Drying Non-sporing Bacteria in a Charcoal Liquid Air Vacuum. 

 By S. G. Shattock, F.R.C.S., and L. S. Dudgeon, FRCP. Communicated by 

 Sir James Dewar, F.R.S 127 



An Improved Method for Opsonic Index Estimations, involving the Separation of 

 Red and White Human Blood Corpuscles. By Charles Rus?, M.B. Lond. 

 Communicated by Dr. A. D. Waller, F.R.S 138 



On a New Method of Examining Normal and Diseased Tissues by means of Intra- 

 vitam Staining. By Prof. Dr. Edwin Goldmann, University of Freiburg, Baden. 

 Communicated by H. G. Plimmer, F.R.S 146 



Antelope and their Relation to Trypanosomiasis. By Dr. H. L. Duke. Com- 

 municated by Sir J. R. Bradford, Sec. R.S. (Plate 2) 156 



No. B 578.— June 14, 1912. 

 On the Presence of Radium in Some Carcinomatous Tumours. By W. S. Lazarus- 

 Barlow, M.D., F.R.C.P. Communicated by Sir J. R. Bradford, K.C.M.G., 



See. R.S 170 



A Critical Study of Experimental Fever. By Edward C. Hort, F.R.C.P. Edin., and 



W. J. Penfold, M.B., CM. Communicated by Dr. C. J. Martin, F.B.S 174 



On the Systematic Position of the Spirochaets. By Clifford Dobell, Fellow of 

 Trinity College, Cambridge ; Lecturer at the Imperial College of Science, 

 London, S.W. Communicated by A. Sedgwick, F.R.S 186 



The Production of Variation in the Physiological Activity of Bacillus coli by the 

 Use of Malachite-Green. By Cecil Revis. Communicated by Sir J. R. 

 Bradford, Sec. R.S 192 



